User Manual

Fitting Installation. EX80-Series meters require special t-
tings that ensure that the ow sensor is installed to the correct
depth. The tting must be installed in the pipeline before the
meter can be installed. For best results, install with at least
ten diameters of straight pipe upstream of the meter and
ve diameters downstream (or more under specic adverse
circumstances). See diagrams, next page.
If there is not enough straight run to smooth out the turbu-
lence caused by valves, ttings, and changes in direction,
some decrease in accuracy may result. This does not mean
that the ow meter’s reading is meaningless, however. In
some applications (control systems, valve operation, chemi-
cal addition), a repeatable reading may be more important
than a highly accurate one.
Although EX80-Series PVC meter tees are supplied with some
straight pipe, additional straight pipe should be added to
meet straight pipe recommendations. It is not advisable to
connect a ow-disturbing device (e.g. valve or elbow) directly
to the end of these ttings.
A PVC tting is usually installed by solvent welding. The stain-
less steel and brass meter ttings have female pipe threads,
requiring the appropriate male threaded ttings. Saddleor
weld ttings (3” and above) require a hole to be cut in the
pipe. Recommended hole size is 1-3/4”.
Chemical Injection or Fertigation. When any magmeter, by
any manufacturer, is used in a chemical injection application
(including fertigation), the chemical injection point must be
placed downstream of the magmeter OR far enough upstream
for complete mixing to occur before the uid reaches the
meter. When unmixed chemical or fertilizer alternates with
water passing through the meter, the rapid changes in con-
ductivity may cause sudden spikes and drops in the meter’s
reading, resulting in inaccurate measurement. The magmeter
will restabilize, however, with a steady ow of uid of uniform
conductivity.
INSTALLATION
Caution: Never remove the U-clip retainer
when the pipe is under pressure. Always
remove pressure from the pipe before you
attempt to remove the meter. Removal under
pressure may result in damage or serious injury.
Page 2
5X
DISTORTED FLOWS
Distorted
Flow Prole
Faster Flow
Causes Meter
To Read High
10X
Okay position if there is no
air in the pipe
POSITIONING THE METER
BEST POSITIONS
Caution: These ow sensors are not recom-
mended for installation downstream of a
boiler feedwater pump where installation
fault may expose the ow sensor to boiler
pressure and temperature. Maximum recommended
temperature is 130°F (Plastic), 200°F (Metal).
Meter Installation. After the meter tting is installed in the
pipeline, the meter can be installed in the tting. After noting
the direction of the ow arrow, press the meter into the tting
as far as it will go. Retain the meter in place by inserting the
U-clip. The pin can be installed from either side. It may be
necessary to rotate the probe back and forth slightly to start
the pin into the slots on the probe. Slide the pin in as far as
it will go.
Caution: In chemical injection or fertiga-
tion applications, install chemical injection
point downstream of magmeter, or far
enough upstream to allow complete mix-
ing of uids before the meter.